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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,237 | 9,114 | 9,114 |
| 2006 | $7,916 | 7,160 | 7,160 |
| 2007 | $6,493 | 6,568 | 6,568 |
| 2008 | $5,098 | 3,124 | 3,124 |
| 2009 | $4,861 | 3,678 | 3,678 |
| 2010 | $4,595 | 3,140 | 3,140 |
| 2011 | $4,379 | 2,344 | 2,344 |
Note: Quantity represents Weight in kilograms
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